Fits handlebars with a diameter of 20 23 mm and is compatible with multiple ride types including bicycle, mountain bike, BMX, road bike, E bike, and E scooter. Adjustable length for a fit Mirror length can be set anywhere from 0 to 50 mm to suit different handlebars, rider sizes, and visibility preferences. Anti glare performance for safer night riding Anti glare mirror design minimizes the impact of headlights from vehicles behind you, helping improve visibility and safety during night rides. Larger field of view for better awareness The rearview mirror offers a wider field of view than traditional round mirrors, enabling you to spot vehicles or hazards behind you more quickly. Reliable, rider focused design Built to withstand regular use and maintain stable rear visibility across common riding scenarios. Ideal use scenarios Urban commuting: monitor traffic behind you when changing lanes or merging in city traffic. Night riding: reduced glare from headlights enhances rear visibility on dimly lit streets. Mixed terrain or E bike riding: keep an eye on riders or vehicles approaching from the rear on trails or shared paths. Key attributes at a glance Function: rearview mirror designed for bicycles, mountain bikes, BMX, road bikes, E bikes, and E scooters. Compatibility: fits 20 23 mm handlebar diameter. Size and adjustability: adjustable 0 50 mm length to match rider preference and setup. Performance: anti glare feature and expanded rear visibility for safer riding.